The addition of hydrogen peroxide makes the UV-mediated
decolourisation process more economically feasible. Overall
performance of the UV-based treatments in terms of reduction
in colour, A254, DOC (and thus EE/O) decreased in the
order: UVC/H2O2 (32 mg/L) > VUV/H2O2 (16 mg/L) > UVC/H2O2
(16 mg/L) > VUV > UVC.